Three-dimensional display of mine ventilation

Question 1: The three-dimensional schematic diagram of mine ventilation system can be referenced by CAD.

Question 2: How to make a three-dimensional diagram of mine ventilation system? I don't know what to use for the three-dimensional diagram you said. Do you want to make a model? Or computer simulation? Model, do whatever you want. The computer can use the three-dimensional function of cad to draw pictures, but if the external connection is not simulated, it is better to use 3dmax.

If you want to do network solution, I'm afraid it's time to write your own program and have plenty of food and clothing, but the difficulties are mutual and can be realized by matlab.

Question 3: How to draw the schematic diagram of three-dimensional ventilation in coal mine? Ventilation drawing system diagram.

When drawing the system diagram, you only need to pay attention to the following points: 1, elevation 2, equipment position 3, tuyere position 4, fittings position 5 and air duct direction.

Question 4: Who has the drawings of mine ventilation and safety in Zhongxing Coal Industry of Fenxi Mining Group? (Network and three-dimensional schematic diagram of difficult ventilation period) I don't know.

Question 5: What is the CAD design of mine ventilation system like? That's about it.

Question 6: Mine Ventilation "Coal Mine Safety Regulations"

ventilating device

Article 100 The composition of underground air must meet the following requirements:

(a) in the intake air of the mining face, the oxygen concentration is not less than

20

%, the carbon dioxide concentration does not exceed 0.5%.

(2) The concentration of harmful gases shall not exceed the provisions in Table 1.

Table 1 Maximum allowable concentration of harmful gas in mine

Nominal name

Carbon monoxide CO 0.0024

Nitrogen oxide (converted into nitrogen dioxide NO 2) 0.00025

Sulfur dioxide SO 2 0.0005

Hydrogen sulfide H2S 0.00066

Ammonia N H 3 0.004

Maximum allowable concentration (%)

The allowable concentrations of gas, carbon dioxide and hydrogen shall be implemented in accordance with the relevant provisions of this regulation.

The concentration of all gases in the mine is calculated by volume percentage.

Article one hundred and one the wind speed in the mine should conform to the table.

2 requirements.

The wind speed of the shaft with staircase or the shaft under maintenance shall not exceed 8m/s; After the stairway is closed around, the shaft

The maximum allowable wind speed can be determined according to the following table.

2. Provisions shall be implemented.

The lowest wind speed in the roadway of overhead electric locomotive without gas emission can be lower than the following table.

2, but not less than

0.5m

/s .

Comprehensive mechanized coal mining face, after taking measures such as coal seam water injection and coal winning machine spray dust suppression, its maximum wind speed can be as follows

Above the table.

2, but not more than 5 m/s. ..

Article 102 The air temperature below the inlet wellhead (dry bulb temperature, the same below) must be above 2℃.

The temperature of the mining face of the production mine shall not exceed 26℃, and the temperature of the mechanical and electrical equipment cavern shall not exceed.

30℃; When the temperature exceeds, it is necessary to shorten the working hours of staff in over-temperature places and give them high-temperature health care.

Meet.

When the temperature of the mining face exceeds 30℃ and the temperature of the mechanical and electrical equipment chamber exceeds 34℃, the operation must be stopped.

Industry.

When designing new, rebuilt and expanded mines, the air temperature in mines must be predicted and calculated, and the over-temperature places must be equipped with refrigeration and cooling devices.

Meter, complete cooling facilities.

Article one hundred and three the required air volume of mine shall be calculated respectively according to the following requirements, and the maximum value shall be taken:

(a) according to the maximum number of people working underground at the same time, the air supply per person per minute shall not be less than 4m.

3。

- 18 -

Table 2 allowable wind speed in mine roadway

Mine name

Allowable wind speed/(m/s)

Lowest and highest

Air shafts and adits without lifting equipment

A shaft specially designed for lifting materials.

Qiao Feng

A shaft for lifting people and materials.

Main inlet and return air lane

Roadway of stringing electric locomotive

Transportation lane, air inlet and return lane in mining area

Coal mining face, driving coal roadway and semi-coal roadway

rock drivage

Other ventilated walkways

1.0

0.25

0.25

0. 15

0. 15

15 12 10888

six

four

four

(two) according to the sum of the actual needs of coal mining, excavation, cavern and other places. The reality of every place

When air volume is required, the concentration and wind speed of harmful gases such as gas, carbon dioxide and hydrogen at the site must be consistent.

And the air supply per person shall conform to the relevant provisions of this regulation.

When calculating the air volume according to the actual needs, the spare air volume should be avoided to be too large or too small. Coal mining enterprises should be formulated according to the specific situation.

The air volume calculation method shall be revised at least once every five years 1 time.

Article 104 The annual mining operation plan of a mine must verify the production and ventilation capacity of the mine, and it must be in accordance with

The actual air supply for the mine output is verified, and the production with super ventilation capacity is strictly prohibited.

Article one hundred and five the mine must establish a wind system, every 10 days 1 times comprehensive wind measurement. In the coal mining face and

Other wind measuring stations should measure at any time according to actual needs, and the results of each wind measurement should be recorded and written on the record board of the wind measuring station.

Let's go

Measures should be taken to adjust the air volume according to the wind measurement results.

106th mines must have a sufficient number of ventilation safety testing instruments. The instrument must be authorized by the state.

The whole machine measurement detection unit carries out detection.

Article 107 The mine must have a complete independent ventilation system. When changing the ventilation system of the whole mine, it must be compiled

Ventilation design and safety measures shall be examined and approved by the technical director of the enterprise.

108th through the roadway must comply with the following provisions:

(1) Before the roadway is connected, the comprehensive mechanized roadway is in the distance.

Fifty million years ago, ... >>

Question 7: Coal Mine Ventilation Knowledge "Coal Mine Safety Regulations"

ventilating device

Article 100 The composition of underground air must meet the following requirements:

(a) in the intake air of the mining face, the oxygen concentration is not less than

20

%, the carbon dioxide concentration does not exceed 0.5%.

(2) The concentration of harmful gases shall not exceed the provisions in Table 1.

Table 1 Maximum allowable concentration of harmful gas in mine

Nominal name

Carbon monoxide CO 0.0024

Nitrogen oxide (converted into nitrogen dioxide NO 2) 0.00025

Sulfur dioxide SO 2 0.0005

Hydrogen sulfide H2S 0.00066

Ammonia N H 3 0.004

Maximum allowable concentration (%)

The allowable concentrations of gas, carbon dioxide and hydrogen shall be implemented in accordance with the relevant provisions of this regulation.

The concentration of all gases in the mine is calculated by volume percentage.

Article one hundred and one the wind speed in the mine should conform to the table.

2 requirements.

The wind speed of the shaft with staircase or the shaft under maintenance shall not exceed 8m/s; After the stairway is closed around, the shaft

The maximum allowable wind speed can be determined according to the following table.

2. Provisions shall be implemented.

The lowest wind speed in the roadway of overhead electric locomotive without gas emission can be lower than the following table.

2, but not less than

0.5m

/s .

Comprehensive mechanized coal mining face, after taking measures such as coal seam water injection and coal winning machine spray dust suppression, its maximum wind speed can be as follows

Above the table.

2, but not more than 5 m/s. ..

Article 102 The air temperature below the inlet wellhead (dry bulb temperature, the same below) must be above 2℃.

The temperature of the mining face of the production mine shall not exceed 26℃, and the temperature of the mechanical and electrical equipment cavern shall not exceed.

30℃; When the temperature exceeds, it is necessary to shorten the working hours of staff in over-temperature places and give them high-temperature health care.

Meet.

When the temperature of the mining face exceeds 30℃ and the temperature of the mechanical and electrical equipment chamber exceeds 34℃, the operation must be stopped.

Industry.

When designing new, rebuilt and expanded mines, the air temperature in mines must be predicted and calculated, and the over-temperature places must be equipped with refrigeration and cooling devices.

Meter, complete cooling facilities.

Article one hundred and three the required air volume of mine shall be calculated respectively according to the following requirements, and the maximum value shall be taken:

(a) according to the maximum number of people working underground at the same time, the air supply per person per minute shall not be less than 4m.

3。

- 18 -

Table 2 allowable wind speed in mine roadway

Mine name

Allowable wind speed/(m/s)

Lowest and highest

Air shafts and adits without lifting equipment

A shaft specially designed for lifting materials.

Qiao Feng

A shaft for lifting people and materials.

Main inlet and return air lane

Roadway of stringing electric locomotive

Transportation lane, air inlet and return lane in mining area

Coal mining face, driving coal roadway and semi-coal roadway

rock drivage

Other ventilated walkways

1.0

0.25

0.25

0. 15

0. 15

15 12 10888

six

four

four

(two) according to the sum of the actual needs of coal mining, excavation, cavern and other places. The reality of every place

When air volume is required, the concentration and wind speed of harmful gases such as gas, carbon dioxide and hydrogen at the site must be consistent.

And the air supply per person shall conform to the relevant provisions of this regulation.

When calculating the air volume according to the actual needs, the spare air volume should be avoided to be too large or too small. Coal mining enterprises should be formulated according to the specific situation.

The air volume calculation method shall be revised at least once every five years 1 time.

Article 104 The annual mining operation plan of a mine must verify the production and ventilation capacity of the mine, and it must be in accordance with

The actual air supply for the mine output is verified, and the production with super ventilation capacity is strictly prohibited.

Article one hundred and five the mine must establish a wind system, every 10 days 1 times comprehensive wind measurement. In the coal mining face and

Other wind measuring stations should measure at any time according to actual needs, and the results of each wind measurement should be recorded and written on the record board of the wind measuring station.

Let's go

Measures should be taken to adjust the air volume according to the wind measurement results.

106th mines must have a sufficient number of ventilation safety testing instruments. The instrument must be authorized by the state.

The whole machine measurement detection unit carries out detection.

Article 107 The mine must have a complete independent ventilation system. When changing the ventilation system of the whole mine, it must be compiled

Ventilation design and safety measures shall be examined and approved by the technical director of the enterprise.

108th through the roadway must comply with the following provisions:

(1) Before the roadway is connected, the comprehensive mechanized roadway is in the distance.

Fifty million years ago, ... >>

Question 8: What are the main contents of mine ventilation? Design basis and main contents of mine ventilation 1. Mine ventilation design basis (1) Meteorological data of mining area: perennial wind direction, monthly average temperature of highest temperature and lowest temperature over the years, and monthly average wind pressure. (2) The temperature, geothermal gradient, inlet wellhead, return wellhead and bottom hole temperature in the constant temperature zone of the mining area. (3) Rainfall, maximum flood level, water inflow and underground hydrological data in the mining area. (4) Geological terrain of the mine field. (5) Vertical depth of gas weathering zone in coal seam, gas content, gas pressure and gradient in each coal seam, etc. (6) Spontaneous combustion tendency and fire cycle of coal seam. (7) Explosion risk and explosion index of coal dust. (8) Mine design production capacity and service life. (9) Mine development mode and roadway layout in mining area. (10) wellhead elevation of main shaft, auxiliary shaft and air shaft. (1 1) the production capacity and service life of all levels of the mine, the production capacity of the mining area and the working face. (12) Atlas of mine roadway section. (13) Mine electricity fee. Second, the main steps and contents of mine ventilation design (1) give a necessary overview of the natural factors affecting ventilation design. (2) Put forward feasible mine ventilation system scheme, make technical and economic comparison, select the best ventilation system, and demonstrate its rationality. (3) Calculation and distribution of mine air volume: According to the Code for Mine Design of Coal Industry and the actual air demand of coal mining, tunneling and cavern, the maximum number of people working in the mine at the same time shall provide air volume of not less than 4m3 per minute. (4) Calculation of total negative pressure in mine: If the service life of small mine is not long (10-20 years), the ventilation network of the whole mine should be selected to calculate the minimum and maximum negative pressure; For large mines with long service life, the minimum and maximum negative pressure in two periods of easy ventilation and difficult ventilation should be selected to calculate, so as to achieve the design output and maximum service life of the ventilator, and the calculation results should be included in the negative pressure calculation summary table. (5) Submit the total air volume, total negative pressure and production time of the mine in the early and late stages to the mechanical and electrical specialty (such as ventilation of multiple air shafts, each return air shaft should be calculated separately), and select the mine ventilator. (6) Calculate the equal pore of mine ventilation and evaluate the difficulty of mine ventilation. (7) Select underground ventilation structure, including type, quantity and place of use. (8) Draw the schematic diagram of mine ventilation system. (9) write instructions. This article comes from: China Coal Mine Safety Production Network (MAQ). Refer to maq/article/anquanzs/200904/article _ 8532 for details.

Question 9: Basic requirements of mine ventilation for fresh air flow Mine ventilation-basic tasks

(1), supply enough fresh air underground to meet the oxygen demand of personnel.

(2) Dilute the poisonous and harmful gas and dust underground to ensure safe production.

(3) Adjust the underground climate and create a good working environment.

Ventilation must be done underground. Without ventilation, safety and production cannot be guaranteed. Therefore, mine ventilation is the most basic link in mine production and has always played a very important role in mine construction and production.

Question 10: Help! Based on the design scheme of mine ventilation system of PLC, I have a screenshot of Siemens program, but the teacher asked to use Omron. Ask an understanding friend for help. Ok, no problem.